RECC620 (evoxs) electronic lock cylinder
At least I found a nice (and cheap) european standard lock cylinder. Unfortunatelly it does not work with NTAG tags, only with Mifare 1K. I suppose the RECC610 (version without mechanical keys) does not work either. Product link.
Sometimes small troubles can lead to more critical ones. You may call Locksmith or any other technician who can make duplicate key and reopen the cylinder.